program
{
    int
            a, b, c;
    string x, y, z;
    c = (a + b) * 2;
    if (c >= 100 or x == z or false)
    {
        read (y);
        write (y);
        write (x + y + z, c);
    }
    c = a = 21;
    while (c > 100)
        c = c - 5;
    write (c);
    x = x + "step";
    do
        a = 1;
    while(false);
    while (true){
        while(false);
        while (true){
            while(true) {
                while(true){
                    while(true) {
                        x = 4;
                    }
                }
            }
        }
    }
    write (x);
}

